Dead end cable clamp



April 9, 1940. w, MILNE 2,196,320

DEAD END CABLE CLAMP Filed Dec. '7, 1958 7 I iUEntuI' W. G. MI'LNE'.

v Patented Apr. 9, 1940 DEAD END CABLE CLAMP Winford Gladstone Milne,Hamilton, Ontario,

Canada,

assignor to N. Slater Company Limited, Hamilton, Ontario, Canada, a'company of Canada Application December 7, 1938, Serial No. 244,456

'1 Claims- (01. 24-241) r! 1 ..1- I

My invention relates to improvements in dead end cable clamps and anobject of my invention is to devise a clamp which will alternativelydead end cables of different cross-sectional diameters without having toremove and replace the clamping element.

A further object is to devise a rotatable keeper associated with theclamping element and clamping seat which is provided with a plurality oflongitudinal grooves of different cross-sectional radii in its surface,one of which may receive the cable of corresponding cross-sectionalradius.

With the above and other objects in view which will hereinafter appearas my specification proceeds, my invention consists of the constructionand arrangement all as hereinafter more particularly described andillustrated in the accompanying drawing in which- Fig. 1 represents aside view of my dead end clamp.

Fig. 2 is a top plan view.

Fig. 3 is an end view viewed from the end of the clamp provided with thekeeper, and

Fig. 4 is a perspective detail of the keeper.

Like characters of reference indicate corresponding parts in thedifferent views of the drawmg.

My dead end clamp comprises a snubbing member I having a groove 2 in theperipheral surface thereof, said groove being pitched from its end wherethe cable enters to the end where the cable leaves the block and passesover the clamping seat 3, the groove defining a loop so that the cableis correspondingly looped. The clamping seat 3 is preferably disposed atright angles to the axis of the cable as it enters the groove of thesnubbing member.

A forked bracket portion 4 by means of which the clamp is attached to asupport is preferably formed integrally with the snubbing member.

The cable contacting face of the clamping seat 3 is provided with arebate 5 with a longitudinal groove 6 to receive the cable, and a keeper1 of preferably triangular cross-section and provided on each side facewith a longitudinal cable receiving groove 8 of differentcross-sectional radius to that of the adjacent sides. Notches 9 areprovided in the apices of the keeper 1 to receive the base and legs ofthe U-bolt I0 which straddles the keeper, and the legs of such U-boltextend freely through the clamping seat and have nuts ll threadedthereon and adapted to engage the face of the clamping seat remote fromthe cable contacting face.

In employing my dead end clamp the cable A is snubbed around the'memberI in the groove 2 with its slack end protruding beyond the clamping seat3. Depending upon the diameter of the cable A by looseningthe nuts, llthe U-bolt Ill may be moved away from the seat until the keeper 1 can berotated when it may be turned so that the groove 9 of correspondingcross-sectional radius tothe cross-sectional radius of the cable mayreceive the latter whenthe U-bolt may be tightened down by the 'nutsf'orcing inward the keeper-1 to clamp the cable between it'and theclamping seat 3.

From the above description it will be apparent that by use of myrotatable keeper cables of three different diameters may bealternatively, clamped in position without havingto remove the U-bolt.

What I claim as my invention is:

1. In a cable clamp, in combination, a clamping seat, a clamping element'adjustably mounted on the clamping seat, and a keeper rotatable in saidclamping element when the latter is adjusted into a non-clampingposition on the clamping seat, said keeper having a plurality oflongitudinal grooves of different cross-sectional radii in its surface,any one of which is adapted to receive a cable of correspondingcross-sectional radius such that the cable is clamped between theclamping seat and the keeper upon the clamping element being adjustedinto the clamping position on the clamping seat wherein the keeper isnon-rotatably held in such clamping element.

2. In a cable clamp, in combination, a clamping seat, a U-bolt havingits legs extending freely through the clamping seat, nuts threaded onthe legs of the U-bolt and adapted to engage the face of the clampingseat remote from its clamping face, and a keeper rotatable in saidU-bolt when the latter is adjusted into a non-clamping position on theclamp-ing seat, said keeper having a plurality of longitudinal groovesof different cross-sectional radii in its surface, any one of which isadapted to receive a cable of corresponding cross-sectional radius suchthat the cable is clamped between the clamping seat and the keeper uponthe U-bolt being adjusted into the clamping position on the clampingseat wherein the keeper is non-rotatably held in such U-bolt.

3. In a cable clamp, in combination, a clamping seat, a U-bolt havingits legs extending freely through the clamping seat, nuts threaded onthe legs of the U-bolt and adapted to engage the face of the clampingseat remote from its clamping face, and a keeper rotatable in saidU-boltwhen the latter is adjusted into a non-clamping position on theclamping seat, said keeper being of triangular cross-section withlongitudinal grooves of different cross-sectional radii in its sidefaces, any one of which is adapted to receive a cable of correspondingcross-sectional radius such that the cable is clamped between theclamping seat and the keeper upon the U-bolt being adjusted into theclamping position on the clamping seat wherein the keeper isnon-rotatably held in such U-bolt.

4. In a-cable clamp, in combination, a clamping seat, a U-bolt havingits legs extending freely through the clamping seat, nuts threaded onthe legs of the U-bolt and adapted to engage the face of the clampingseat remote from its clamping face, and a keeper rotatable in saidU-bolt when the latter is adjusted into a non-clamping position on theclamping seat, said keeper being of triangular cross-section withnotches in its apices adapted to receive the legs and base of the U-boltand with longitudinal grooves of difierent crosssectional radii in itssurface, any one of which is adapted to receive a cable of correspondingcross-sectional radius such that the cable is clamped between theclamping seat and the keeper upon the U-bolt being adjusted into theclamping position on the clamping seat wherein the keeper isnon-rotatably held in such U-bolt.

5. A keeper for a cable clamp of the kind having a clamping seat and anadjustable clamp comprising a member having a plurality of fiat facesdisposed at an angle to each other with a longitudinal cable receivinggroove of different cross-sectional diameter to those of the remaininggrooves in each face, and means on the member for rotatably retainingthe same in the clamp when the latter is retracted and nonrotatablyretaining the member in the clamp when the clamp is in the clampingposition.

6. A keeper tor a cable clamp of the kind having a clamping seat and anadjustable U-bolt clamp comprising a member of triangular crosssectionwith a longitudinal cable receiving groove of different cross-sectionaldiameter to those of the remaining grooves in each face, and means onthe member for rotatably retaining the same in the clamp when the latteris retracted and nonrotatably retaining the member in the clamp when theclamp is in the clamping position.

7. A keeper for a cable clamp of the kind having a clamping seat and anadjustable U-bolt clamp comprising a member of triangular crosssectionwith a longitudinal cable receiving groove of difierent cross-sectionaldiameter to those of the remaining grooves in each face, said memberhaving a notch in each apex aligned with the notches in the remainingapices and said notches being adapted to receive the legs and base ofthe U-bolt clamp for rotatably retaining the member therein when theU-bolt clamp is retracted and non-rotatably retaining the member in theU-bolt clamp when the latter is in the clamping position.

WINFORD GLADSTONE MILNE.

